1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb831067ff3ce74d06a77fc71007e9e180506e874fb7b5e13b63bea2602723bd7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4683db99-a4f1-41cd-b9d5-8701bb2a3601.json and https://artists.proofprofile.net/proofs/artist/4683db99-a4f1-41cd-b9d5-8701bb2a3601.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3a8f3f9d36283af602851106f130f85f9815f08a79fd0deabb464cadb97571. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41762985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b3c4873df5e58966f99126438beae9f7b4b0fac394467ea82f6a13e7846579. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY41762984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba26c659094fb0155957b5028465430c93590b602ee955c0279912fb120354e0. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USHM81739186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f2e0f163850cd56ba7b28e2c29298d8e306ee3acc2b50508e3dd127d11a63d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ2095340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf887c191a9a3429e3679b8a7007c62b2bdd0a98aefb79881bec6f4ccfcfa8083. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42139617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a985f3b4d4d78e06892f49e4549980e94fa3ec11716768989714eeeb906d73e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USCGJ2207653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48ad671b0bd01b503b98a26d5bdcf9a6fd63eee71a507b2549979cc2f9b4282. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2269665.
Aliento de vida (canción al Espíritu Santo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e74bf412e9c91d36581bc908de3d26d8f642f08ec796781115219dc9a47add. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2397016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6fde34ec3483e947fda8bf65f28029c0371d5c06594582a92d5795d4618170. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4R2414656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe65d3688fbc02e28e888d325227311cbbf46ba5c18cbd38e5bfcf73eff86cd. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2489013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23efdcebcd5fb6f514f16f7e102f77c14ab5b2384415bf314a10079f117c99a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2569196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffed337c2952235a506a36585a644e7cbf105f26fc0542545790b2bfbeaec5cd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJZ2584282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fad8c68cdd68d2c4a4ad2ceee5c76e62c25291faf48a32fd41c25d8fb6f6112. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2533275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d29897afd7a439fa49baa0b49e35606352716eaa12bafe547220c6f446d310. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2533276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748931c86b3828b0cf93a594c578aafba92cd0b0f37dde6c0d75449caf6ad14c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2533277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dd76e4326a6fe658dd866802e432e6b306bfa7ed9e04ad59acb7b92127424e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2533278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec0570831f1fc057f8c19529cd654414b0a72580ccb25990e35b0f429d5369. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2533279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071703675b1a0a4bf729e4ca9ff10da1bb961d78fba2f3223468860689edb2f3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2533280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb7e122e311a656b189653f41a3015edb2f7b2234f2a0c5d06e50da658a82f5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2533281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39767a7801c0623da4f4f623dfb69512816b5288ed2c3925d530c3407e1ec407. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USX9P2533282.